ciao alvinet
grazie per la risposta, ho provato come mi hai consigliato

codice:
hotkeys -t itouch
e funziona solo con i tasti volume, mute, e-mail. Ho inserito la parte riguardante i tasti nel mio file di configurazione e non mi funzionano gli altri tasti.
Ecco i miei due file per hotkeys:
Il primo l'ho chiamato Logitech_Media_Keyboard.def:

codice:
<?xml version="1.0"?>

<definition>

  <config model="Logitech Media Keyboard">
  
    <Search       keycode="229"/>
    <Next         keycode="233"/>
    <Back         keycode="234"/>
    
    <Bookmarks    keycode="230"/>
    <Home         keycode="178"/>
    
    <Playpause    keycode="162"/>
    <Stop         keycode="164"/>
    
    <Media        keycode="237"/>
    <VolUp        keycode="176" adj="2"/>
    <VolDown      keycode="174" adj="2"/>
    <Mute         keycode="160"/>
    
    <PrevTrack    keycode="144"/>
    <NextTrack    keycode="153"/>
    
    <Email        keycode="236"/>
    <Messenger    keycode="   "/>
  
    <Calculator   keycode="161"/>
    <PowerDown    keycode="223"/>
  
  </config>
  
  <contributor>
    <name>   </name>
    <email>   </email>
  </contributor>

</definition>
e il secondo hotkey.conf:

codice:
############################################################
# Global configuration for hotkeys                         #
############################################################

#Tastiera predefinita
Kbd=Logitech_Media_Keyboard

#Azioni predefinite

Search=/usr/local/bin/firefox
Next=
Back=

Bookmarks=
Home=/usr/bin/kfmclient openProfile filemanagement

# Amarok Media Player

Playpause=AMAROK_PLAYPAUSE
Stop=AMAROK_STOP

Media=/usr/bin/amarok
Volup=
Voldown=
Mute=

Next=AMAROK_FORWARD
Previous=AMAROK_BACK

Email=/usr/bin/thunderbird
Messenger=

Calculator=kcalc
Shutdown=shutdown -h now


# osd_font=-arphic-ar pl kaitim big5-bold-i-normal--0-250-0-0-c-0-*-*
### For the color, you can either use the strings in /etc/X11/rgb.txt,
### or use the RGB syntax #RRGGBB, e.g. ##A086FF
# osd_color=LawnGreen
# osd_timeout=3
### osd_position is either 'top' or 'bottom'
# osd_position=bottom
# osd_offset=25
mi sai dire cosa devo modificare/aggiungere?
Grazie e scusa se divento pesante.